Arch rib roof truss



Dec. 22, 1936. w. E. WILSON l 4 ARCH RIB ROOF TRUSS Filed sept. 28,19:51

Patented Dec. 22, 1936 UNITED STATI-3s PATENT OFFICE ARCH RIB ROOF TRUSSWinfred E. Wilson, Los Angeles, Calif.

Application September 28, 1931, Serial No. 565,567 4o1aims. (ci. 10s-2s)My invention relates to building constructions, and more particularly toa combined arch rib roof structure and truss whereby a simple,inexpensive construction, and at the same time one of maximum strengthand rigidity is obtained, and which involves a structure which may bequickly assembled and disassembled,` and is adapted to span spaces ofvarying size, without alteration, except that parts may be added orremoved from said structure.

It accordingly is an object of my invention to provide a novel form ofroof structure comprising a plural part arch rib construction, havingmeans whereby the parts may be held in secured and detachable relation,said rib having associated therewith an improved truss structure, theends of which, and of said rib being adapted to be anchored by asuitable means Within the walls of the building with which saidstructure is associated.

It is also Within the province of my invention to provide a novel endassembly or brick Wall seat for my arch rib roof truss including taperedend pieces, and, if desired, an angular reinforcing means, associatedwith the ends of said truss, and in secured and detachable relationtherewith by through means, such as suitable bolts.

The above and further objects and advantages of my invention, as willhereinafter more fully appear, I attain by the construction described inthe specification, and illustrated in preferred form on the drawing,forming a part of my application.

Reference is had to the accompanying drawing, in which similar referencecharacters denote similar parts. In the drawing,

Fig. 1 is a front elevational view of my invention as associated with abuilding,

Fig. 2 is an enlarged, fragmentary front elevational view of the endassembly of truss seat, illustrating how said assembly may be associatedwith and anchored in and to the walls of a building,

Fig. 3 is an enlarged cross sectional view, taken on the line 3 3, Fig.1, through the bolt head, the bolt being invisible, part of the latticework being omitted,

Fig. 3A is a side view of Fig. 3,

Fig. 4 is a similar view, taken on the line 4 4, Fig. 2, and

Fig. 5 is a perspective view of the angular reinforcing member.

Describing my invention more in detail, in its broader aspects saidinvention comprises a novel form of building construction composed of aplurality of parts or units, preferably of standard and interchangeablestructure, which may be held together in secured and detachable relationat various points by suitable means, forming an arch rib structure, withwhich in any preferred 5 way may be associated a suitable trussconstruction, said rib and truss being adapted to support, in spacedrelation therewith by any preferred means, a roof sheathing.

It is also within the province of my invention 10 to provide a novel endassembly for the arch rib and truss structure, of standard parts,whereby the ends of said structure may be anchored to and in the wallsof a building.

More specifically, my invention comprises an 15 arch rib, designatedgenerally by the reference numeral 2, said rib comprising a plurality ofmembers or units 4, each of which is preferably provided with an arcuatetop, a straight bottom and radial cut ends, and which units or membersare adapted to be placed in end to end and overlapping relation, andsecured in detachable relation by a suitable means such as a sleeve orstrap device 6 (Fig. 3, more particularly), the ends of which sleeve orstrap are secured to 25 said overlapped units or members by a suitablemeans, such as the through bolts 8. It will be apparent that the unitsor members 4 may be multiplied both longitudinally and laterally, as inpractice preferred or needed, depending upon the space to be spanned andupon the strength and rigidity desired.

If preferred, the longitudinal length of the rib 2 may be provided witha cap piece I0, secured by the nut bolt and washer construction l2passing through the sleeve 6. See Fig. 3, more particularly.

Positioned above the rib 2 is a sheathing I4, which is held in spacedrelation with said rib by any suitable means, such as the rafters I6,and the end joists I8, which joists provide a firm structure, and alsoreduce the number of bricks used in brick buildings, since said joiststake the place of bricks which would otherwise have to be used above thetruss 20; and to increase the strength and rigidity of the structure, asuitable truss or lattice construction 20 may be provided, whichconstruction may comprise a tie beam structure 22 of any preferrednumber of parts, and which may be held together by suitable plates 24,the king posts 26 and struts 28 being associated with the rib 2 and thetie beam construction 22 in any Way in practice preferred.

This construction, it will be noted, not only provides for speedyassembly and disassembly,

but also aiords a maximum strength and rigidity, together with economyin material and minimum expense.

If desired, also, I may provide a novel end assembly for the combinedrib and truss construction, shown more particularly in Figs. 2 and 4,and Which is especially useful in anchoring the roof structure in thewalls of a building.

For this purpose the preferably brick Walls 30 are provided withcavities 32 With bed plates 4l for the receipt of said ends, and the endpieces or units 3d are tapered by being reduced both at the top andbottom of said end pieces or units toward the ends of said assembly, asindicated by the numeral 36, suitable angular members 31, having plates38, being provided, which plates are alternately associated with the tiebeam construction 22, the assemblybeing held in secured and detachablerelation by a suitable means, such as the through bolt and Washerconstruction 4B. Where desired a suitable bed plate 32 may be used todistribute the bearing on the wall.

If desired, also, an additional anchoring means may be provided, such asa suitable steel anchoring rod or member d2, the end i4 of which may beembedded Within the Walls 343, While the end Mi may be secured in anypreferred Way to the rib 2. See Fig. 2.

In accordance with the provisions of the patent statutes, I havedescribed the principle of operation of myvinvention together With theapparatus which I now consider to represent the bestl embodimentthereof; but I desire to have it understood that the apparatus shown isonly illustrative, and that the invention can be carried out by othermeans.

I claim as my invention:

1. In an apparatus of the class described, ari end construction for atruss structure including arch units and a cap member, said constructioncomprising end pieces, an angular member embracing said end pieces, saidcap member, and said units, a pair of tie beams positioned cxternally ofsaid angular member, and means eX- tending through said tie beams, saidangular member and said units for holding said units, said tie beams andsaid angular member in secured relation.

2. A truss comprising in combination a curved upper chord or rib, aplural part lower chord or tie-beam, the ends of which lie outside ofthe sides of said arch rib, angular end shoes placed between the ends ofthe tie beam and the arch rib, and securing devices extending betweensaid tie beam, shoes, and arch rib.

3. In an apparatus of the class described, an end construction for atruss structure comprising the end piece of an upper chord, a pair oftie beams at the sides of said end piece, an angular member having itsends embracing the ends of said end piece and its side portionspositioned between said tie beams and end piece, and nut and boltassemblies extending through said tie beams, side portions and endpieces.

4. In an apparatus of the class described, an end structure for a trusscomprising arch units, a cap member, a pair of tie beams at the sides ofsaid arch units, an angular member having its end embracing the ends ofsaid arch units, and its sides positioned between said tie beams andarch units, said cap member extending down- Wardly and Within the endand side portions of said angular member.

WINFRED E. WILSON.

